Whipsnade is mostly pathways so no need to get muddy, maybe just if you park on the fields. It is however really cold and very windy as it is so high so make sure you take hats and gloves even if it looks like a beautiful day. Last 1/2 term we got there for 11 and it was busy but fine.

In this weather, think about paying the extra to take your car in. Whipsnade is big, and it's much more pleasant in bad weather to be able to drive to see the things you're most interested in. It will also let you warm up!

The path to the elephant area is very muddy at the moment, as is the field to reach the adventure playground, although the playground itself is fine. I'd say boots are definitely the way to go. The drive-through Asian area was closed due to flooding last weekend.

I always take walking boots as it can be a bit muddy just off the paths. I would echo what was said above about it being windy, we ended up buying hats and gloves there as it was soooo cold. Arriving at 11 should be ok as it is so big it doesn't feel very crowded.